The singer William Warfield died on Sunday in Chicago. He was probably best known for singing “Old Man River” from Show Boat. At least to me. He also defined the title role in Porgy and Bess, had a successful opera career and was a professor of music at Northwestern. He was 82. Seems like the radio has been alive with his music the past couple days. It is a rousing thing to listen to William Warfield singing Aaron Copeland’s version of “Simple Gifts.”